[Smithy]

The 22-year-old star - who was a judge on the US version of the show for two years from 2012 - is said to have agreed to join the UK version after it was claimed Simon Cowell has sacked Mel B after just one series.

A source told Daily Mirror newspaper: ''Simon's management phoned to see when Demi could sign her contract about a week ago.

''They both have busy schedules but she is planning to do it as soon as possible and Simon is eager to get the judging panel sorted.''

Wouldn't surprise me tbh